4 files changed, 13 insertions, 6 deletions
diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c
index ca631ca4f2c6..535290f24eed 100644
--- a/sound/core/seq/seq_ports.c
+++ b/sound/core/seq/seq_ports.c
@@ -362,6 +362,8 @@ int snd_seq_set_port_info(struct snd_seq_client_port * port,
 			port->direction |= SNDRV_SEQ_PORT_DIR_OUTPUT;
 	}
 
+	port->is_midi1 = !!(info->flags & SNDRV_SEQ_PORT_FLG_IS_MIDI1);
+
 	return 0;
 }
 
diff --git a/sound/core/seq/seq_ports.h b/sound/core/seq/seq_ports.h
index b111382f697a..20a26bffecb7 100644
--- a/sound/core/seq/seq_ports.h
+++ b/sound/core/seq/seq_ports.h
@@ -87,6 +87,8 @@ struct snd_seq_client_port {
 	unsigned char direction;
 	unsigned char ump_group;
 
+	bool is_midi1;	/* keep MIDI 1.0 protocol */
+
 #if IS_ENABLED(CONFIG_SND_SEQ_UMP)
 	struct snd_seq_ump_midi2_bank midi2_bank[16]; /* per channel */
 #endif
diff --git a/sound/core/seq/seq_ump_client.c b/sound/core/seq/seq_ump_client.c
index 637154bd1a3f..e5d3f4d206bf 100644
--- a/sound/core/seq/seq_ump_client.c
+++ b/sound/core/seq/seq_ump_client.c
@@ -189,6 +189,8 @@ static void fill_port_info(struct snd_seq_port_info *port,
 	port->ump_group = group->group + 1;
 	if (!group->active)
 		port->capability |= SNDRV_SEQ_PORT_CAP_INACTIVE;
+	if (group->is_midi1)
+		port->flags |= SNDRV_SEQ_PORT_FLG_IS_MIDI1;
 	port->type = SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
 		SNDRV_SEQ_PORT_TYPE_MIDI_UMP |
 		SNDRV_SEQ_PORT_TYPE_HARDWARE |
@@ -223,7 +225,7 @@ static int seq_ump_group_init(struct seq_ump_client *client, int group_index)
 		return -ENOMEM;
 
 	fill_port_info(port, client, group);
-	port->flags = SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
+	port->flags |= SNDRV_SEQ_PORT_FLG_GIVEN_PORT;
 	memset(&pcallbacks, 0, sizeof(pcallbacks));
 	pcallbacks.owner = THIS_MODULE;
 	pcallbacks.private_data = client;
diff --git a/sound/core/seq/seq_ump_convert.c b/sound/core/seq/seq_ump_convert.c
index d9dacfbe4a9a..90656980ae26 100644
--- a/sound/core/seq/seq_ump_convert.c
+++ b/sound/core/seq/seq_ump_convert.c
@@ -595,12 +595,13 @@ int snd_seq_deliver_from_ump(struct snd_seq_client *source,
 	type = ump_message_type(ump_ev->ump[0]);
 
 	if (snd_seq_client_is_ump(dest)) {
-		if (snd_seq_client_is_midi2(dest) &&
-		    type == UMP_MSG_TYPE_MIDI1_CHANNEL_VOICE)
+		bool is_midi2 = snd_seq_client_is_midi2(dest) &&
+			!dest_port->is_midi1;
+
+		if (is_midi2 && type == UMP_MSG_TYPE_MIDI1_CHANNEL_VOICE)
 			return cvt_ump_midi1_to_midi2(dest, dest_port,
 						      event, atomic, hop);
-		else if (!snd_seq_client_is_midi2(dest) &&
-			 type == UMP_MSG_TYPE_MIDI2_CHANNEL_VOICE)
+		else if (!is_midi2 && type == UMP_MSG_TYPE_MIDI2_CHANNEL_VOICE)
 			return cvt_ump_midi2_to_midi1(dest, dest_port,
 						      event, atomic, hop);
 		/* non-EP port and different group is set? */
@@ -1254,7 +1255,7 @@ int snd_seq_deliver_to_ump(struct snd_seq_client *source,
 		return 0; /* group filtered - skip the event */
 	if (event->type == SNDRV_SEQ_EVENT_SYSEX)
 		return cvt_sysex_to_ump(dest, dest_port, event, atomic, hop);
-	else if (snd_seq_client_is_midi2(dest))
+	else if (snd_seq_client_is_midi2(dest) && !dest_port->is_midi1)
 		return cvt_to_ump_midi2(dest, dest_port, event, atomic, hop);
 	else
 		return cvt_to_ump_midi1(dest, dest_port, event, atomic, hop);